/* roulang page: index */
:root{
  --void:#07070D;
  --abyss:#0E0E1E;
  --panel:#12121F;
  --panel-2:#161628;
  --volt:#A3E635;
  --plasma:#06B6D4;
  --laser:#F43F5E;
  --text:#FFFFFF;
  --muted:#94A3B8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(163,230,53,.28);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-soft:0 24px 60px -28px rgba(0,0,0,.9);
  --shadow-volt:0 10px 34px -12px rgba(163,230,53,.45);
  --shadow-plasma:0 10px 34px -12px rgba(6,182,212,.5);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--void);
  color:var(--text);
  line-height:1.62;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--volt);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:76px 0;position:relative;z-index:1}
.section--alt{background:linear-gradient(180deg,rgba(14,14,30,.85),rgba(7,7,13,.4));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head--left{text-align:left}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;
  color:var(--volt);background:rgba(163,230,53,.08);
  border:1px solid rgba(163,230,53,.25);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.section-title .hl{background:linear-gradient(92deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.68}
.lead{color:#CBD5E1;line-height:1.7}

/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,7,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,rgba(163,230,53,.22),rgba(6,182,212,.22));
  border:1px solid rgba(163,230,53,.35);
  box-shadow:0 0 18px rgba(163,230,53,.25);
}
.brand-text strong{display:block;font-size:.98rem;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-text em{display:block;font-style:normal;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:600;color:#CBD5E1;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(148,163,184,.1);border-color:var(--line)}
.nav-link.is-active{color:var(--void);background:linear-gradient(96deg,var(--volt),#5EEAD4);box-shadow:var(--shadow-volt)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:var(--volt);
  border:1px solid rgba(163,230,53,.4);background:transparent;transition:all .22s ease;
}
.btn-ghost:hover{background:rgba(163,230,53,.12)}
.btn-primary{
  padding:10px 20px;border-radius:999px;font-size:.88rem;font-weight:800;color:#06120A;
  background:linear-gradient(96deg,var(--volt),#4ADE80);
  box-shadow:0 0 18px rgba(163,230,53,.45);transition:all .22s ease;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(163,230,53,.7)}
.btn-primary:active{transform:translateY(1px) scale(.98)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(148,163,184,.1);
  border:1px solid var(--line);font-size:20px;cursor:pointer;margin-left:auto;
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:all .24s ease;
}
.btn-volt{background:linear-gradient(96deg,var(--volt),#4ADE80);color:#06120A;box-shadow:var(--shadow-volt)}
.btn-volt:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(163,230,53,.75)}
.btn-line{border-color:rgba(6,182,212,.5);color:#7DD3FC;background:rgba(6,182,212,.08)}
.btn-line:hover{background:rgba(6,182,212,.18);border-color:var(--plasma)}
.btn:active{transform:translateY(1px) scale(.985)}

/* Hero */
.hero{position:relative;padding:64px 0 54px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;z-index:0}
.hero-veil{position:absolute;inset:0;z-index:0;background:radial-gradient(900px 480px at 12% 6%,rgba(163,230,53,.16),transparent 60%),radial-gradient(760px 420px at 88% 18%,rgba(6,182,212,.18),transparent 62%),linear-gradient(180deg,rgba(7,7,13,.75),rgba(7,7,13,.97))}
.bento{display:grid;grid-template-columns:1.55fr 1fr;gap:18px;position:relative;z-index:1}
.bento-main{
  background:linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.9));
  border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:34px 32px;box-shadow:var(--shadow-soft);
}
.bento-side{display:grid;gap:18px}
.bento-card{
  background:linear-gradient(150deg,rgba(18,18,31,.95),rgba(14,14,30,.85));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  transition:transform .25s ease,border-color .25s ease;
}
.bento-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.hero h1{font-size:clamp(1.65rem,3.2vw,2.6rem);font-weight:800;line-height:1.22;letter-spacing:-.015em;margin-bottom:18px}
.hero h1 .grad{background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-intro{color:#CBD5E1;line-height:1.7;font-size:1rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.mini-stat{display:flex;align-items:baseline;gap:10px}
.mini-stat b{font-size:1.6rem;font-weight:800;color:var(--volt);letter-spacing:-.02em}
.mini-stat span{font-size:.86rem;color:var(--muted)}
.bento-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.bento-card p{font-size:.88rem;color:var(--muted);line-height:1.6}
.cta-bar{
  margin-top:18px;position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;border-radius:var(--radius-lg);
  background:linear-gradient(96deg,rgba(163,230,53,.14),rgba(6,182,212,.14));
  border:1px solid var(--line-strong);
}
.cta-bar p{font-size:.95rem;color:#E2E8F0;max-width:640px}

/* Data strip */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-box{
  background:linear-gradient(160deg,rgba(18,18,31,.92),rgba(14,14,30,.7));
  border:1px solid var(--line);border-radius:var(--radius-md);padding:20px;
}
.stat-box b{display:block;font-size:1.75rem;font-weight:800;background:linear-gradient(92deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-box span{display:block;margin-top:6px;font-size:.86rem;color:var(--muted)}

/* Grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{
  background:linear-gradient(160deg,rgba(18,18,31,.94),rgba(14,14,30,.72));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 46px -26px rgba(163,230,53,.4)}
.card h3{font-size:1.05rem;font-weight:700;margin-bottom:10px}
.card p{font-size:.9rem;color:var(--muted);line-height:1.65}
.tag{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:5px 10px;border-radius:999px;margin-bottom:12px;
}
.tag-volt{color:var(--volt);background:rgba(163,230,53,.1);border:1px solid rgba(163,230,53,.28)}
.tag-plasma{color:#67E8F9;background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.3)}
.tag-laser{color:#FDA4AF;background:rgba(244,63,94,.12);border:1px solid rgba(244,63,94,.3)}
.num-badge{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:.95rem;
  background:rgba(163,230,53,.12);border:1px solid rgba(163,230,53,.32);color:var(--volt);margin-bottom:14px;
}

/* Category wall */
.cat-card{
  position:relative;overflow:hidden;border-radius:var(--radius-xl);
  border:1px solid var(--line);background:var(--panel);
  transition:transform .28s ease,border-color .28s ease;
  display:block;
}
.cat-card:hover{transform:translateY(-5px);border-color:var(--line-strong)}
.cat-media{position:relative;height:170px;overflow:hidden}
.cat-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-media img{transform:scale(1.06)}
.cat-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,7,13,.1),rgba(7,7,13,.92))}
.cat-body{padding:20px 22px 24px}
.cat-body h3{font-size:1.06rem;font-weight:700;margin-bottom:8px}
.cat-body p{font-size:.88rem;color:var(--muted);line-height:1.62}
.cat-link{display:inline-flex;align-items:center;gap:7px;margin-top:14px;font-size:.86rem;font-weight:700;color:var(--volt)}
.cat-link::after{content:"→";transition:transform .25s ease}
.cat-card:hover .cat-link::after{transform:translateX(4px)}

/* Check list */
.check-list{display:grid;gap:14px}
.check-item{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:var(--radius-md);background:rgba(148,163,184,.05);border:1px solid var(--line)}
.check-item span.ic{flex-shrink:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:800;color:#06120A;background:linear-gradient(120deg,var(--volt),#4ADE80)}
.check-item p{font-size:.9rem;color:#CBD5E1;line-height:1.62}
.check-item b{color:#fff}

/* Compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-col{border-radius:var(--radius-lg);padding:26px;border:1px solid var(--line)}
.compare-col.bad{background:linear-gradient(160deg,rgba(244,63,94,.09),rgba(14,14,30,.7));border-color:rgba(244,63,94,.28)}
.compare-col.good{background:linear-gradient(160deg,rgba(163,230,53,.1),rgba(14,14,30,.7));border-color:rgba(163,230,53,.3)}
.compare-col h3{font-size:1.05rem;font-weight:800;margin-bottom:16px}
.compare-col ul li{display:flex;gap:10px;font-size:.9rem;color:#CBD5E1;line-height:1.6;padding:8px 0;border-bottom:1px dashed rgba(148,163,184,.16)}
.compare-col ul li:last-child{border-bottom:none}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{position:relative;padding:24px 20px;border-radius:var(--radius-lg);background:linear-gradient(160deg,rgba(18,18,31,.94),rgba(14,14,30,.7));border:1px solid var(--line)}
.step b{display:block;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--plasma);margin-bottom:10px}
.step h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.step p{font-size:.87rem;color:var(--muted);line-height:1.6}

/* Table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:rgba(14,14,30,.6)}
table{width:100%;border-collapse:collapse;min-width:720px}
th,td{padding:15px 18px;text-align:left;font-size:.88rem;border-bottom:1px solid var(--line)}
th{font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--volt);background:rgba(163,230,53,.06)}
td{color:#CBD5E1}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(6,182,212,.06)}

/* Milestones */
.timeline{display:grid;gap:16px}
.tl-item{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:20px 22px;border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(148,163,184,.04)}
.tl-item b{color:var(--volt);font-size:.9rem}
.tl-item p{font-size:.9rem;color:var(--muted);line-height:1.62}

/* Testimonials */
.quote{border-radius:var(--radius-lg);padding:24px;border:1px solid var(--line);background:linear-gradient(160deg,rgba(18,18,31,.94),rgba(14,14,30,.7))}
.quote p{font-size:.92rem;color:#CBD5E1;line-height:1.66}
.quote footer{margin-top:16px;display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:.85rem;color:#06120A;background:linear-gradient(120deg,var(--volt),var(--plasma))}
.quote footer span{font-size:.85rem;color:var(--muted)}

/* Progress */
.bar-row{margin-bottom:18px}
.bar-row .bar-top{display:flex;justify-content:space-between;font-size:.86rem;color:#CBD5E1;margin-bottom:8px}
.bar{height:9px;border-radius:999px;background:rgba(148,163,184,.14);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--volt),var(--plasma))}

/* League matrix */
.league{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.league-item{padding:20px;border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(148,163,184,.04)}
.league-item h3{font-size:.98rem;font-weight:700;margin-bottom:8px}
.league-item p{font-size:.86rem;color:var(--muted);line-height:1.6}

/* News */
.news-layout{display:grid;grid-template-columns:1.7fr 1fr;gap:22px}
.news-item{display:flex;gap:16px;padding:18px;border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(148,163,184,.04);transition:border-color .24s ease,transform .24s ease}
.news-item:hover{border-color:var(--line-strong);transform:translateX(3px)}
.news-thumb{width:88px;height:66px;border-radius:12px;object-fit:cover;flex-shrink:0}
.news-item h3{font-size:.98rem;font-weight:700;margin-bottom:6px}
.news-item p{font-size:.85rem;color:var(--muted);line-height:1.58}
.news-meta{margin-top:8px;display:flex;gap:12px;font-size:.76rem;color:#64748B;flex-wrap:wrap}
.side-panel{border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;background:linear-gradient(160deg,rgba(18,18,31,.94),rgba(14,14,30,.7))}
.side-panel h3{font-size:1rem;font-weight:700;margin-bottom:14px}
.side-panel li{padding:11px 0;border-bottom:1px dashed rgba(148,163,184,.16)}
.side-panel li:last-child{border-bottom:none}
.side-panel a{font-size:.88rem;color:#CBD5E1;line-height:1.5;transition:color .2s ease}
.side-panel a:hover{color:var(--volt)}
.empty-note{padding:20px;border:1px dashed var(--line);border-radius:var(--radius-md);color:var(--muted);font-size:.9rem}

/* Guarantee */
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.g-item{padding:22px;border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(148,163,184,.04);text-align:left}
.g-item .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:18px;background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.3);margin-bottom:14px}
.g-item h3{font-size:.96rem;font-weight:700;margin-bottom:8px}
.g-item p{font-size:.85rem;color:var(--muted);line-height:1.58}

/* Quick answers + FAQ */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.qa{padding:20px 22px;border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(148,163,184,.04)}
.qa h3{font-size:.96rem;font-weight:700;margin-bottom:8px;color:#E2E8F0}
.qa p{font-size:.88rem;color:var(--muted);line-height:1.62}
.faq-list{display:grid;gap:12px;max-width:900px}
details.faq{border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(148,163,184,.04);padding:0;overflow:hidden;transition:border-color .24s ease}
details.faq[open]{border-color:var(--line-strong)}
details.faq summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;font-size:.98rem;
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--volt);font-size:1.25rem;font-weight:700;flex-shrink:0}
details.faq[open] summary::after{content:"–"}
details.faq .faq-body{padding:0 22px 20px;color:var(--muted);font-size:.9rem;line-height:1.68}
details.faq h3{display:inline;font-size:inherit;font-weight:700}

/* Form */
.form-shell{display:grid;grid-template-columns:1.05fr 1fr;gap:26px;align-items:start}
.form-card{border:1px solid var(--line);border-radius:var(--radius-xl);padding:28px;background:linear-gradient(160deg,rgba(18,18,31,.96),rgba(14,14,30,.78));box-shadow:var(--shadow-soft)}
.field{margin-bottom:16px}
.field label{display:block;font-size:.82rem;font-weight:600;color:#CBD5E1;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-sm);
  background:rgba(7,7,13,.75);border:1px solid var(--line);color:#fff;font-size:.92rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--volt);box-shadow:0 0 0 3px rgba(163,230,53,.16);outline:none}
.privacy-note{margin-top:14px;font-size:.78rem;color:#64748B;line-height:1.55}
.form-side .card{margin-bottom:16px}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(14,14,30,.7),rgba(7,7,13,1));padding:60px 0 30px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
.footer-brand p{font-size:.87rem;color:var(--muted);line-height:1.65;margin-top:14px;max-width:340px}
.footer-col h4{font-size:.86rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#E2E8F0;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:.87rem;color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--volt)}
.footer-bottom{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.8rem;color:#64748B}
.age-badge{display:inline-flex;align-items:center;gap:8px;font-size:.76rem;font-weight:700;color:#FDA4AF;border:1px solid rgba(244,63,94,.35);background:rgba(244,63,94,.1);padding:6px 12px;border-radius:999px}

/* FAB */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:999px;
  background:rgba(7,7,13,.82);backdrop-filter:blur(12px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.86),rgba(7,7,13,.86)),linear-gradient(96deg,var(--volt),var(--plasma));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.45);
  font-size:.84rem;font-weight:700;color:#E2E8F0;
  opacity:.8;transition:all .26s ease;
  min-height:56px;
}
.fab:hover{opacity:1;transform:translateY(-2px);box-shadow:0 0 30px rgba(163,230,53,.6)}
.fab:active{transform:translateY(1px) scale(.97)}
.fab .fab-ic{font-size:1.1rem}
.fab .dot{position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;background:var(--laser);box-shadow:0 0 10px rgba(244,63,94,.9);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* Responsive */
@media (max-width:1024px){
  .bento{grid-template-columns:1fr}
  .bento-side{grid-template-columns:1fr 1fr}
  .grid-3,.grid-4,.league,.guarantee,.steps{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .news-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .form-shell{grid-template-columns:1fr}
  .main-nav{position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;padding:14px 20px 20px;background:rgba(7,7,13,.98);border-bottom:1px solid var(--line);display:none}
  .main-nav.is-open{display:flex}
  .nav-toggle{display:block}
  .nav-actions{margin-left:0}
}
@media (max-width:768px){
  .section{padding:58px 0}
  .hero{padding:44px 0 40px}
  .bento-main{padding:26px 22px}
  .compare,.qa-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:1fr;gap:8px}
  .nav-actions .btn-ghost{display:none}
}
@media (max-width:520px){
  .grid-3,.grid-4,.league,.guarantee,.steps,.stat-strip,.bento-side{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-text em{display:none}
  .btn{width:100%}
  .hero-cta .btn{width:100%}
  .cta-bar{flex-direction:column;align-items:flex-start}
  .news-item{flex-direction:column}
  .news-thumb{width:100%;height:150px}
  .fab{left:12px;bottom:84px;padding:11px 15px;font-size:.78rem}
}

/* roulang page: article */
:root{
  --void:#07070D;
  --abyss:#0E0E1E;
  --panel:#12121F;
  --panel-2:#161628;
  --volt:#A3E635;
  --plasma:#06B6D4;
  --laser:#F43F5E;
  --text:#FFFFFF;
  --muted:#94A3B8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(163,230,53,.28);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-soft:0 24px 60px -28px rgba(0,0,0,.9);
  --shadow-volt:0 10px 34px -12px rgba(163,230,53,.45);
  --shadow-plasma:0 10px 34px -12px rgba(6,182,212,.5);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--void);
  color:var(--text);
  line-height:1.62;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--plasma);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:76px 0;position:relative;z-index:1}
.section--tight{padding:52px 0}
.section--alt{background:linear-gradient(180deg,rgba(14,14,30,.85),rgba(7,7,13,.4));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:34px}
.section-head--left{text-align:left}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;
  color:var(--volt);background:rgba(163,230,53,.08);
  border:1px solid rgba(163,230,53,.25);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.25;letter-spacing:-.01em;margin:0}
.section-title .hl{background:linear-gradient(92deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.68}
.lead{color:#CBD5E1;line-height:1.7}
/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,7,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,rgba(163,230,53,.22),rgba(6,182,212,.22));
  border:1px solid rgba(163,230,53,.35);
  box-shadow:0 0 18px rgba(163,230,53,.25);
}
.brand-text strong{display:block;font-size:.98rem;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-text em{display:block;font-style:normal;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:600;color:#CBD5E1;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(148,163,184,.1);border-color:var(--line)}
.nav-link.is-active{color:var(--void);background:linear-gradient(96deg,var(--volt),#5EEAD4);box-shadow:var(--shadow-volt)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:var(--volt);
  border:1px solid rgba(163,230,53,.4);background:transparent;transition:all .22s ease;
}
.btn-ghost:hover{background:rgba(163,230,53,.12)}
.btn-primary{
  padding:10px 20px;border-radius:999px;font-size:.88rem;font-weight:800;color:#06120A;
  background:linear-gradient(96deg,var(--volt),#4ADE80);
  box-shadow:0 0 18px rgba(163,230,53,.45);transition:all .22s ease;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(163,230,53,.7)}
.btn-primary:active{transform:translateY(1px) scale(.98)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(148,163,184,.1);
  border:1px solid var(--line);font-size:20px;cursor:pointer;margin-left:auto;
}
/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:all .24s ease;
}
.btn-volt{background:linear-gradient(96deg,var(--volt),#4ADE80);color:#06120A;box-shadow:var(--shadow-volt)}
.btn-volt:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(163,230,53,.75)}
.btn-line{border-color:rgba(6,182,212,.5);color:#7DD3FC;background:rgba(6,182,212,.08)}
.btn-line:hover{background:rgba(6,182,212,.18);border-color:var(--plasma)}
.btn:active{transform:translateY(1px) scale(.985)}
/* Hero article */
.hero{position:relative;padding:54px 0 46px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.24;z-index:0}
.hero-veil{position:absolute;inset:0;z-index:0;background:radial-gradient(900px 480px at 12% 6%,rgba(163,230,53,.16),transparent 60%),radial-gradient(760px 420px at 88% 18%,rgba(6,182,212,.18),transparent 62%),linear-gradient(180deg,rgba(7,7,13,.78),rgba(7,7,13,.97))}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);margin-bottom:18px}
.crumb a{color:#CBD5E1;border-bottom:1px dashed rgba(148,163,184,.4)}
.crumb a:hover{color:var(--volt);border-color:var(--volt)}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:26px;align-items:start;position:relative;z-index:1}
.bento-main{
  background:linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.9));
  border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:34px 32px;box-shadow:var(--shadow-soft);
}
.hero h1{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;line-height:1.24;letter-spacing:-.015em;margin:0 0 16px}
.hero h1 .grad{background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-intro{color:#CBD5E1;line-height:1.7;font-size:1rem;margin:0}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;
  font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:#7DD3FC;background:rgba(6,182,212,.1);border:1px solid rgba(6,182,212,.3);
}
.chip--volt{color:var(--volt);background:rgba(163,230,53,.1);border-color:rgba(163,230,53,.3)}
.chip--laser{color:#FDA4AF;background:rgba(244,63,94,.12);border-color:rgba(244,63,94,.32)}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:.84rem;color:var(--muted)}
.article-meta b{color:#E2E8F0;font-weight:700}
.hero-figure{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--panel);box-shadow:var(--shadow-soft)}
.hero-figure img{width:100%;height:230px;object-fit:cover}
.hero-figure figcaption{padding:14px 18px;font-size:.82rem;color:var(--muted);border-top:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
.stat{
  background:linear-gradient(150deg,rgba(22,22,40,.95),rgba(14,14,30,.85));
  border:1px solid var(--line);border-radius:var(--radius-md);padding:14px 16px;
  transition:border-color .25s ease,transform .25s ease;
}
.stat:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.stat strong{display:block;font-size:1.35rem;font-weight:800;background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;font-size:.76rem;color:var(--muted);margin-top:4px;line-height:1.5}
/* Cards / grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.bento-card{
  background:linear-gradient(150deg,rgba(18,18,31,.95),rgba(14,14,30,.85));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  transition:transform .25s ease,border-color .25s ease;
}
.bento-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.bento-card h3{font-size:1.02rem;font-weight:700;margin:0 0 10px;line-height:1.4}
.bento-card p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.68}
.card-index{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:11px;
  font-size:.85rem;font-weight:800;color:var(--void);margin-bottom:14px;
  background:linear-gradient(140deg,var(--volt),#5EEAD4);
}
.card-index--plasma{background:linear-gradient(140deg,#67E8F9,var(--plasma));color:#04131A}
.card-index--laser{background:linear-gradient(140deg,#FDA4AF,var(--laser));color:#2A0409}
/* Article body */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start}
.article-body{
  background:linear-gradient(160deg,rgba(18,18,31,.9),rgba(10,10,20,.7));
  border:1px solid var(--line);border-radius:var(--radius-xl);padding:34px 32px;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.25rem,2vw,1.6rem);font-weight:800;line-height:1.35;
  margin:38px 0 14px;padding-left:14px;border-left:3px solid var(--volt);
}
.article-body h3{font-size:1.1rem;font-weight:700;margin:26px 0 10px;color:#E2E8F0}
.article-body h4{font-size:1rem;font-weight:700;margin:20px 0 8px;color:#CBD5E1}
.article-body p{margin:0 0 16px;color:#CBD5E1;line-height:1.72}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;color:#CBD5E1}
.article-body li{margin-bottom:9px;line-height:1.7}
.article-body li::marker{color:var(--volt);font-weight:700}
.article-body a{color:#7DD3FC;border-bottom:1px solid rgba(6,182,212,.45)}
.article-body a:hover{color:var(--volt);border-color:var(--volt)}
.article-body strong{color:#fff}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-radius:var(--radius-md);
  background:rgba(6,182,212,.08);border-left:3px solid var(--plasma);color:#E2E8F0;
}
.article-body img{border-radius:var(--radius-lg);margin:20px 0;border:1px solid var(--line)}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:.9rem}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:rgba(163,230,53,.08);color:var(--volt);font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.05em}
.article-body td{color:#CBD5E1}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.toc{
  position:sticky;top:96px;
  background:linear-gradient(160deg,rgba(18,18,31,.95),rgba(14,14,30,.85));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;
}
.toc h4{margin:0 0 12px;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--volt);font-weight:800}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:8px}
.toc a{font-size:.88rem;color:#CBD5E1;display:block;padding:7px 10px;border-radius:9px;transition:all .2s ease}
.toc a:hover{background:rgba(163,230,53,.1);color:#fff}
.empty-state{padding:34px 4px;text-align:left}
.empty-state h2{margin:0 0 10px;font-size:1.3rem;border:0;padding:0}
.empty-state p{color:var(--muted);margin-bottom:18px}
/* Signal table */
.table-shell{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:rgba(14,14,30,.6)}
.signal-table{width:100%;border-collapse:collapse;font-size:.9rem}
.signal-table th{
  background:rgba(6,182,212,.1);color:#7DD3FC;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);font-weight:700;
}
.signal-table td{padding:14px 16px;border-bottom:1px solid var(--line);color:#CBD5E1;vertical-align:top}
.signal-table tr:last-child td{border-bottom:0}
.signal-table tr:hover td{background:rgba(148,163,184,.05)}
.level{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:.74rem;font-weight:700;white-space:nowrap}
.level--low{color:#94A3B8;background:rgba(148,163,184,.12);border:1px solid rgba(148,163,184,.3)}
.level--mid{color:#FDE68A;background:rgba(253,230,138,.1);border:1px solid rgba(253,230,138,.28)}
.level--high{color:#A3E635;background:rgba(163,230,53,.12);border:1px solid rgba(163,230,53,.32)}
.level--max{color:#FDA4AF;background:rgba(244,63,94,.14);border:1px solid rgba(244,63,94,.34)}
/* Checklist */
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:linear-gradient(150deg,rgba(18,18,31,.9),rgba(14,14,30,.7));
  border:1px solid var(--line);border-radius:var(--radius-md);padding:16px 18px;
  transition:border-color .22s ease,transform .22s ease;
}
.check-list li:hover{border-color:var(--line-strong);transform:translateX(3px)}
.check-list .tick{
  flex:0 0 26px;width:26px;height:26px;border-radius:9px;display:grid;place-items:center;
  background:rgba(163,230,53,.14);color:var(--volt);font-weight:800;font-size:.8rem;border:1px solid rgba(163,230,53,.3);
}
.check-list b{display:block;color:#fff;font-size:.95rem;margin-bottom:4px}
.check-list span{color:var(--muted);font-size:.87rem;line-height:1.65}
/* Mistakes */
.mistake-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.mistake{
  border:1px solid rgba(244,63,94,.24);border-radius:var(--radius-lg);padding:20px;
  background:linear-gradient(150deg,rgba(40,12,22,.55),rgba(14,14,30,.75));
}
.mistake h3{margin:0 0 8px;font-size:1rem;font-weight:700;color:#FDA4AF}
.mistake p{margin:0;font-size:.88rem;color:var(--muted);line-height:1.68}
/* Timeline */
.timeline{position:relative;padding-left:26px;margin:0}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--volt),var(--plasma))}
.timeline-item{position:relative;padding:0 0 24px 18px}
.timeline-item::before{content:"";position:absolute;left:-26px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--void);border:2px solid var(--volt);box-shadow:0 0 12px rgba(163,230,53,.6)}
.timeline-item h3{margin:0 0 6px;font-size:1rem;font-weight:700}
.timeline-item p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.68}
/* Compare */
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.compare-col{border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;background:rgba(14,14,30,.7)}
.compare-col h3{margin:0 0 12px;font-size:1.05rem;font-weight:800}
.compare-col ul{margin:0;padding-left:18px;color:#CBD5E1;font-size:.9rem}
.compare-col li{margin-bottom:9px;line-height:1.65}
.compare-col--volt{border-color:rgba(163,230,53,.3)}
.compare-col--plasma{border-color:rgba(6,182,212,.32)}
/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(14,14,30,.72);overflow:hidden;transition:border-color .22s ease}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:17px 20px;font-weight:700;font-size:.98rem;
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--volt);font-weight:800;font-size:1.15rem}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin:0;padding:0 20px 18px;color:var(--muted);font-size:.9rem;line-height:1.7}
/* CTA */
.cta-panel{
  border:1px solid var(--line-strong);border-radius:var(--radius-xl);padding:34px;
  background:linear-gradient(140deg,rgba(163,230,53,.12),rgba(6,182,212,.12) 55%,rgba(14,14,30,.92));
  box-shadow:var(--shadow-soft);
  display:grid;grid-template-columns:1.1fr 1fr;gap:30px;align-items:center;
}
.cta-panel h2{margin:0 0 12px;font-size:clamp(1.35rem,2.4vw,1.9rem);font-weight:800;line-height:1.3}
.cta-panel p{margin:0;color:#CBD5E1;font-size:.95rem;line-height:1.7}
.cta-form{display:grid;gap:12px}
.cta-form label{font-size:.8rem;font-weight:700;color:#CBD5E1;display:block;margin-bottom:6px}
.cta-form input,.cta-form select{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(7,7,13,.7);border:1px solid var(--line);color:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input:focus,.cta-form select:focus{border-color:var(--plasma);box-shadow:0 0 0 3px rgba(6,182,212,.18);outline:none}
.form-note{font-size:.78rem;color:var(--muted);line-height:1.6}
/* Footer */
.site-footer{background:linear-gradient(180deg,rgba(7,7,13,.6),rgba(14,14,30,.95));border-top:1px solid var(--line);padding:56px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{color:var(--muted);font-size:.88rem;line-height:1.7;margin:16px 0 0}
.footer-col h4{margin:0 0 14px;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--volt);font-weight:800}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:9px}
.footer-col a{color:#CBD5E1;font-size:.88rem;transition:color .2s ease}
.footer-col a:hover{color:var(--volt)}
.age-badge{display:inline-block;padding:7px 13px;border-radius:999px;font-size:.74rem;font-weight:700;color:#FDE68A;background:rgba(253,230,138,.08);border:1px solid rgba(253,230,138,.28)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:var(--muted);font-size:.8rem;
}
/* FAB */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:999px;
  background:rgba(7,7,13,.82);backdrop-filter:blur(12px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.85),rgba(7,7,13,.85)),linear-gradient(96deg,var(--volt),var(--plasma));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.4);
  font-size:.84rem;font-weight:700;color:#E2E8F0;
  opacity:.78;transition:all .25s ease;min-height:48px;
}
.fab:hover{opacity:1;box-shadow:0 0 30px rgba(6,182,212,.7);transform:translateY(-2px)}
.fab:active{transform:scale(.96)}
.fab-dot{width:9px;height:9px;border-radius:50%;background:var(--volt);box-shadow:0 0 10px var(--volt);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(1.25)}}
/* Responsive */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .article-wrap{grid-template-columns:1fr}
  .toc{position:static}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-panel{grid-template-columns:1fr}
}
@media (max-width:768px){
  .main-nav{
    display:none;position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,7,13,.98);border-bottom:1px solid var(--line);padding:14px 20px 20px;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:12px 14px;border-radius:12px}
  .nav-toggle{display:block}
  .nav-wrap{gap:12px;flex-wrap:nowrap}
  .section{padding:56px 0}
  .bento-main{padding:26px 22px}
  .article-body{padding:24px 20px}
  .grid-2,.compare,.mistake-grid{grid-template-columns:1fr}
  .nav-actions{gap:8px}
  .btn-ghost,.btn-primary{padding:9px 14px;font-size:.82rem}
}
@media (max-width:520px){
  .grid-3,.grid-4,.stat-grid{grid-template-columns:1fr}
  .brand-text em{display:none}
  .hero{padding:38px 0 34px}
  .signal-table th,.signal-table td{padding:11px 12px;font-size:.82rem}
  .footer-grid{grid-template-columns:1fr}
  .fab{left:12px;bottom:84px;padding:10px 14px;font-size:.78rem}
  .article-meta{gap:10px}
}

/* roulang page: category2 */
:root{
  --void:#07070D;
  --abyss:#0E0E1E;
  --panel:#12121F;
  --panel-2:#161628;
  --volt:#A3E635;
  --plasma:#06B6D4;
  --laser:#F43F5E;
  --text:#FFFFFF;
  --muted:#94A3B8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(163,230,53,.28);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-soft:0 24px 60px -28px rgba(0,0,0,.9);
  --shadow-volt:0 10px 34px -12px rgba(163,230,53,.45);
  --shadow-plasma:0 10px 34px -12px rgba(6,182,212,.5);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--void);
  color:var(--text);
  line-height:1.62;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:76px 0;position:relative;z-index:1}
.section--alt{background:linear-gradient(180deg,rgba(14,14,30,.85),rgba(7,7,13,.4));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:34px}
.section-head--left{text-align:left}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;
  color:var(--volt);background:rgba(163,230,53,.08);
  border:1px solid rgba(163,230,53,.25);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.section-title .hl{background:linear-gradient(92deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.68}
.lead{color:#CBD5E1;line-height:1.7}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:0}

/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,7,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,rgba(163,230,53,.22),rgba(6,182,212,.22));
  border:1px solid rgba(163,230,53,.35);
  box-shadow:0 0 18px rgba(163,230,53,.25);
}
.brand-text strong{display:block;font-size:.98rem;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-text em{display:block;font-style:normal;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:600;color:#CBD5E1;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(148,163,184,.1);border-color:var(--line)}
.nav-link.is-active{color:var(--void);background:linear-gradient(96deg,var(--volt),#5EEAD4);box-shadow:var(--shadow-volt)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:var(--volt);
  border:1px solid rgba(163,230,53,.4);background:transparent;transition:all .22s ease;
}
.btn-ghost:hover{background:rgba(163,230,53,.12)}
.btn-primary{
  padding:10px 20px;border-radius:999px;font-size:.88rem;font-weight:800;color:#06120A;
  background:linear-gradient(96deg,var(--volt),#4ADE80);
  box-shadow:0 0 18px rgba(163,230,53,.45);transition:all .22s ease;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(163,230,53,.7)}
.btn-primary:active{transform:translateY(1px) scale(.98)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(148,163,184,.1);
  border:1px solid var(--line);font-size:20px;cursor:pointer;margin-left:auto;place-items:center;
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:all .24s ease;
}
.btn-volt{background:linear-gradient(96deg,var(--volt),#4ADE80);color:#06120A;box-shadow:var(--shadow-volt)}
.btn-volt:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(163,230,53,.75)}
.btn-line{border-color:rgba(6,182,212,.5);color:#7DD3FC;background:rgba(6,182,212,.08)}
.btn-line:hover{background:rgba(6,182,212,.18);border-color:var(--plasma)}
.btn:active{transform:translateY(1px) scale(.985)}
.btn:focus-visible,.nav-link:focus-visible,.btn-ghost:focus-visible,.btn-primary:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--plasma);outline-offset:2px;
}

/* Category hero */
.cat-hero{position:relative;padding:58px 0 54px;overflow:hidden}
.cat-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/342ce4e5fd51d731.jpg');background-size:cover;background-position:center;opacity:.26;z-index:0}
.cat-hero-veil{position:absolute;inset:0;z-index:0;background:radial-gradient(900px 460px at 10% 4%,rgba(163,230,53,.16),transparent 60%),radial-gradient(760px 420px at 90% 16%,rgba(6,182,212,.2),transparent 62%),linear-gradient(180deg,rgba(7,7,13,.78),rgba(7,7,13,.97))}
.cat-hero-panel{
  display:grid;grid-template-columns:1.08fr .92fr;gap:26px;align-items:stretch;
}
.hero-entry{
  background:linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.9));
  border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:34px 32px;box-shadow:var(--shadow-soft);
}
.hero-entry h1{font-size:clamp(1.6rem,3.1vw,2.5rem);font-weight:800;line-height:1.24;letter-spacing:-.015em;margin:6px 0 16px}
.hero-entry h1 .grad{background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy{color:#CBD5E1;font-size:1rem;line-height:1.7}
.hero-chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.chip{
  font-size:.78rem;font-weight:600;color:#D1FAE5;padding:7px 13px;border-radius:999px;
  background:rgba(6,182,212,.1);border:1px solid rgba(6,182,212,.3);
}
.chip--volt{color:#ECFCCB;background:rgba(163,230,53,.1);border-color:rgba(163,230,53,.32)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{margin-top:16px;font-size:.82rem;color:var(--muted)}

.signal-board{
  background:linear-gradient(160deg,rgba(22,22,40,.96),rgba(11,11,22,.92));
  border:1px solid var(--line);border-radius:var(--radius-xl);padding:26px 24px;
  box-shadow:var(--shadow-soft);
}
.signal-board h2{font-size:1.02rem;font-weight:700;letter-spacing:-.01em}
.signal-board .board-sub{font-size:.8rem;color:var(--muted);margin-top:6px}
.board-list{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.board-row{display:flex;flex-direction:column;gap:7px}
.board-row-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.board-row-top strong{font-size:.9rem;font-weight:700}
.board-row-top span{font-size:.8rem;font-weight:700;color:var(--volt)}
.board-track{height:7px;border-radius:999px;background:rgba(148,163,184,.14);overflow:hidden}
.board-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--plasma),var(--volt))}
.board-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:.78rem;color:var(--muted)}

/* Generic cards */
.card{
  background:linear-gradient(150deg,rgba(18,18,31,.95),rgba(14,14,30,.85));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 20px 44px -26px rgba(163,230,53,.5)}
.card h3{font-size:1.02rem;font-weight:700;margin-bottom:8px}
.card p{font-size:.9rem;color:var(--muted);line-height:1.65}
.card-media{border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);margin-bottom:16px;background:var(--panel-2)}
.card-media img{width:100%;height:170px;object-fit:cover}

/* Split layout */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}
.feature-block{
  background:linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.88));
  border:1px solid var(--line);border-radius:var(--radius-xl);overflow:hidden;
}
.feature-block img{width:100%;height:250px;object-fit:cover;opacity:.92}
.feature-body{padding:24px}
.feature-body h3{font-size:1.15rem;font-weight:800;margin-bottom:10px}
.feature-body p{color:#CBD5E1;font-size:.93rem;line-height:1.7}

.sign-list{display:flex;flex-direction:column;gap:14px}
.sign-item{
  display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:start;
  background:rgba(22,22,40,.6);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 18px;transition:border-color .22s ease,background .22s ease;
}
.sign-item:hover{border-color:var(--line-strong);background:rgba(22,22,40,.9)}
.sign-index{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  font-weight:800;font-size:.9rem;color:#06120A;background:linear-gradient(140deg,var(--volt),#5EEAD4);
}
.sign-item h4{font-size:.96rem;font-weight:700;margin-bottom:5px}
.sign-item p{font-size:.86rem;color:var(--muted);line-height:1.6}

/* Table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:rgba(18,18,31,.7)}
table.signal-table{width:100%;border-collapse:collapse;min-width:720px}
table.signal-table th,table.signal-table td{padding:15px 18px;text-align:left;font-size:.88rem;border-bottom:1px solid var(--line)}
table.signal-table thead th{
  font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  background:rgba(11,11,22,.9);font-weight:700;
}
table.signal-table tbody tr{transition:background .2s ease}
table.signal-table tbody tr:hover{background:rgba(163,230,53,.06)}
table.signal-table td:first-child{font-weight:800;color:var(--volt);white-space:nowrap}
table.signal-table tbody tr:last-child td{border-bottom:none}
.prio{display:inline-block;font-size:.74rem;font-weight:700;padding:4px 10px;border-radius:999px}
.prio--high{color:#FECDD3;background:rgba(244,63,94,.16);border:1px solid rgba(244,63,94,.4)}
.prio--mid{color:#FEF3C7;background:rgba(250,204,21,.14);border:1px solid rgba(250,204,21,.35)}
.prio--low{color:#A7F3D0;background:rgba(16,185,129,.14);border:1px solid rgba(16,185,129,.35)}

/* Scenario grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

/* Compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-col{border-radius:var(--radius-lg);padding:24px;border:1px solid var(--line);background:rgba(18,18,31,.8)}
.compare-col--do{border-color:rgba(163,230,53,.32);background:linear-gradient(160deg,rgba(163,230,53,.08),rgba(18,18,31,.9))}
.compare-col--dont{border-color:rgba(244,63,94,.3);background:linear-gradient(160deg,rgba(244,63,94,.08),rgba(18,18,31,.9))}
.compare-col h3{font-size:1.05rem;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.compare-col ul{display:flex;flex-direction:column;gap:12px}
.compare-col li{font-size:.9rem;color:#CBD5E1;line-height:1.65;padding-left:22px;position:relative}
.compare-col--do li::before{content:"✓";position:absolute;left:0;color:var(--volt);font-weight:800}
.compare-col--dont li::before{content:"✕";position:absolute;left:0;color:var(--laser);font-weight:800}

/* Steps + score */
.steps{display:flex;flex-direction:column;gap:16px}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;
  background:rgba(18,18,31,.72);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px 22px;
}
.step-num{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-weight:800;font-size:1.05rem;
  color:#7DD3FC;background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.38);
}
.step h4{font-size:1rem;font-weight:700;margin-bottom:6px}
.step p{font-size:.88rem;color:var(--muted);line-height:1.65}
.score-panel{margin-top:26px;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;background:rgba(11,11,22,.7)}
.score-panel h3{font-size:1.05rem;font-weight:800;margin-bottom:6px}
.score-panel .score-sub{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.score-list{display:flex;flex-direction:column;gap:14px}
.score-row{display:grid;grid-template-columns:180px 1fr 48px;gap:14px;align-items:center}
.score-row span{font-size:.86rem;color:#CBD5E1}
.score-row b{font-size:.86rem;color:var(--volt);text-align:right}
.score-track{height:8px;border-radius:999px;background:rgba(148,163,184,.14);overflow:hidden}
.score-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--plasma),var(--volt))}

/* Channels */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.channel-card{
  display:flex;flex-direction:column;gap:10px;border-radius:var(--radius-lg);padding:24px;
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(22,22,40,.9),rgba(11,11,22,.85));
  transition:transform .25s ease,border-color .25s ease;
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.channel-card .tag{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--plasma);font-weight:700}
.channel-card h3{font-size:1.08rem;font-weight:800}
.channel-card p{font-size:.88rem;color:var(--muted);line-height:1.65}
.channel-card .go{margin-top:auto;font-size:.85rem;font-weight:700;color:var(--volt)}

/* CMS list */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
  display:flex;flex-direction:column;gap:10px;border-radius:var(--radius-lg);padding:22px;
  border:1px solid var(--line);background:rgba(18,18,31,.78);transition:transform .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(6,182,212,.4)}
.post-tag{align-self:flex-start;font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#A7F3D0;background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.32);padding:4px 10px;border-radius:999px}
.post-card h3{font-size:1rem;font-weight:700;line-height:1.45}
.post-card p{font-size:.86rem;color:var(--muted);line-height:1.62}
.post-date{font-size:.76rem;color:#64748B}
.empty-note{font-size:.92rem;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius-lg);padding:26px;background:rgba(18,18,31,.6)}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(18,18,31,.72);overflow:hidden;transition:border-color .22s ease}
.faq-item[open]{border-color:var(--line-strong);background:rgba(22,22,40,.9)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;font-size:.95rem;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.2rem;color:var(--volt);font-weight:700;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 22px 20px;font-size:.9rem;color:var(--muted);line-height:1.7}

/* CTA */
.cta-band{
  border-radius:var(--radius-xl);border:1px solid rgba(163,230,53,.3);
  background:linear-gradient(140deg,rgba(163,230,53,.1),rgba(6,182,212,.1) 55%,rgba(11,11,22,.9));
  padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start;
}
.cta-band h2{font-size:clamp(1.35rem,2.3vw,1.85rem);font-weight:800;line-height:1.3;margin-bottom:12px}
.cta-band p{color:#CBD5E1;font-size:.94rem;line-height:1.7}
.pay-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.pay-badge{
  font-size:.78rem;font-weight:700;padding:7px 13px;border-radius:10px;color:#E2E8F0;
  background:rgba(11,11,22,.75);border:1px solid var(--line);
}
.price-line{margin-top:20px;font-size:.86rem;color:var(--muted)}
.price-line b{color:var(--volt);font-size:1.05rem}
.form-card{background:rgba(9,9,18,.82);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}
.field label{font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.field input,.field select{
  width:100%;padding:12px 14px;border-radius:12px;background:rgba(18,18,31,.95);
  border:1px solid var(--line);font-size:.92rem;transition:border-color .2s ease;
}
.field input:focus,.field select:focus{border-color:var(--volt);outline:none}
.form-note{font-size:.76rem;color:#64748B;margin-top:12px;line-height:1.6}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(11,11,22,.6),rgba(7,7,13,1));padding:56px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{margin-top:16px;font-size:.86rem;color:var(--muted);line-height:1.7;max-width:380px}
.age-badge{display:inline-block;font-size:.74rem;font-weight:700;color:#FECDD3;background:rgba(244,63,94,.14);border:1px solid rgba(244,63,94,.35);padding:6px 12px;border-radius:999px}
.footer-col h4{font-size:.82rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#E2E8F0;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:.87rem;color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--volt)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.78rem;color:#64748B;
}

/* FAB */
.fab{
  position:fixed;left:1rem;bottom:6rem;z-index:50;width:56px;height:56px;border-radius:999px;
  display:grid;place-items:center;font-size:22px;opacity:.78;
  background:rgba(7,7,13,.82);backdrop-filter:blur(12px);
  border:2px solid rgba(6,182,212,.65);
  box-shadow:0 0 20px rgba(6,182,212,.45);
  transition:transform .25s ease,box-shadow .25s ease,opacity .25s ease,border-color .25s ease;
}
.fab:hover{opacity:1;transform:scale(1.09);border-color:var(--volt);box-shadow:0 0 30px rgba(163,230,53,.6)}
.fab:active{transform:scale(.94)}
.fab-dot{position:absolute;top:2px;right:2px;width:12px;height:12px;border-radius:50%;background:var(--laser);box-shadow:0 0 10px var(--laser);animation:fabPulse 1.6s ease-in-out infinite}
@keyframes fabPulse{0%,100%{opacity:.55;transform:scale(.9)}50%{opacity:1;transform:scale(1.12)}}

/* Responsive */
@media (max-width:1024px){
  .cat-hero-panel{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .channel-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-wrap{flex-wrap:wrap;gap:12px;padding-top:10px;padding-bottom:10px}
  .main-nav{
    order:4;width:100%;display:none;flex-direction:column;align-items:stretch;gap:6px;
    padding:12px 0 4px;border-top:1px solid var(--line);margin-left:0;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:11px 14px;border-radius:12px;border:1px solid var(--line)}
  .nav-toggle{display:grid;order:2}
  .nav-actions{order:3}
  .brand{order:1}
}
@media (max-width:768px){
  .section{padding:58px 0}
  .grid-3,.grid-4,.grid-2,.post-grid,.compare{grid-template-columns:1fr}
  .score-row{grid-template-columns:1fr;gap:8px}
  .score-row b{text-align:left}
  .form-row{grid-template-columns:1fr}
  .hero-entry,.signal-board,.cta-band{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .nav-actions{order:3;width:100%;justify-content:space-between;gap:8px}
  .btn-ghost{padding:8px 14px;font-size:.8rem;flex:1;text-align:center}
  .btn-primary{padding:9px 16px;font-size:.8rem;flex:1;text-align:center}
  .brand-text em{display:none}
  .brand-text strong{font-size:.88rem}
  .brand-mark{width:36px;height:36px;font-size:16px;border-radius:11px}
  .step{grid-template-columns:44px 1fr;gap:14px;padding:18px}
  .step-num{width:44px;height:44px;border-radius:13px;font-size:.92rem}
  .sign-item{grid-template-columns:38px 1fr;gap:12px}
  .sign-index{width:38px;height:38px}
  .hero-cta .btn{width:100%}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --void:#07070D;
  --abyss:#0E0E1E;
  --panel:#12121F;
  --panel-2:#161628;
  --volt:#A3E635;
  --plasma:#06B6D4;
  --laser:#F43F5E;
  --text:#FFFFFF;
  --muted:#94A3B8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(163,230,53,.28);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-soft:0 24px 60px -28px rgba(0,0,0,.9);
  --shadow-volt:0 10px 34px -12px rgba(163,230,53,.45);
  --shadow-plasma:0 10px 34px -12px rgba(6,182,212,.5);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--void);
  color:var(--text);
  line-height:1.62;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--volt);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:76px 0;position:relative;z-index:1}
.section--alt{background:linear-gradient(180deg,rgba(14,14,30,.85),rgba(7,7,13,.4));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:800px;margin-bottom:34px}
.section-head--center{max-width:760px;margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;
  color:var(--volt);background:rgba(163,230,53,.08);
  border:1px solid rgba(163,230,53,.25);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.section-title .hl{background:linear-gradient(92deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.68}
.lead{color:#CBD5E1;line-height:1.7}
/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,7,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,rgba(163,230,53,.22),rgba(6,182,212,.22));
  border:1px solid rgba(163,230,53,.35);
  box-shadow:0 0 18px rgba(163,230,53,.25);
}
.brand-text strong{display:block;font-size:.98rem;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-text em{display:block;font-style:normal;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:600;color:#CBD5E1;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(148,163,184,.1);border-color:var(--line)}
.nav-link.is-active{color:var(--void);background:linear-gradient(96deg,var(--volt),#5EEAD4);box-shadow:var(--shadow-volt)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:var(--volt);
  border:1px solid rgba(163,230,53,.4);background:transparent;transition:all .22s ease;
}
.btn-ghost:hover{background:rgba(163,230,53,.12)}
.btn-primary{
  padding:10px 20px;border-radius:999px;font-size:.88rem;font-weight:800;color:#06120A;
  background:linear-gradient(96deg,var(--volt),#4ADE80);
  box-shadow:0 0 18px rgba(163,230,53,.45);transition:all .22s ease;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(163,230,53,.7)}
.btn-primary:active{transform:translateY(1px) scale(.98)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(148,163,184,.1);
  border:1px solid var(--line);font-size:20px;cursor:pointer;margin-left:auto;
}
/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:all .24s ease;
}
.btn-volt{background:linear-gradient(96deg,var(--volt),#4ADE80);color:#06120A;box-shadow:var(--shadow-volt)}
.btn-volt:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(163,230,53,.75)}
.btn-line{border-color:rgba(6,182,212,.5);color:#7DD3FC;background:rgba(6,182,212,.08)}
.btn-line:hover{background:rgba(6,182,212,.18);border-color:var(--plasma)}
.btn:active{transform:translateY(1px) scale(.985)}
/* Category hero */
.cat-hero{position:relative;padding:60px 0 52px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26;z-index:0}
.hero-veil{
  position:absolute;inset:0;z-index:0;
  background:radial-gradient(900px 480px at 14% 8%,rgba(163,230,53,.16),transparent 60%),
             radial-gradient(760px 420px at 86% 16%,rgba(6,182,212,.2),transparent 62%),
             linear-gradient(180deg,rgba(7,7,13,.72),rgba(7,7,13,.97));
}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;text-align:center}
.cat-hero h1{font-size:clamp(1.6rem,3.1vw,2.55rem);font-weight:800;line-height:1.22;letter-spacing:-.015em;margin-bottom:18px}
.cat-hero h1 .grad{background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-intro{color:#CBD5E1;line-height:1.7;max-width:760px;margin:0 auto}
.hero-search{
  display:flex;align-items:center;gap:10px;margin:28px auto 0;max-width:820px;
  background:rgba(18,18,31,.94);border:1px solid var(--line-strong);
  border-radius:999px;padding:8px;box-shadow:var(--shadow-soft);
}
.hero-search input[type="search"]{
  flex:1;min-width:0;background:transparent;border:0;padding:12px 18px;font-size:.95rem;outline:none;
}
.hero-search input[type="search"]::placeholder{color:#64748B}
.hero-search select{
  background:rgba(7,7,13,.85);border:1px solid var(--line);border-radius:999px;
  padding:11px 14px;font-size:.86rem;color:#CBD5E1;cursor:pointer;
}
.hero-search .btn{flex-shrink:0;padding:12px 22px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:20px}
.chip{
  display:inline-flex;align-items:center;gap:7px;font-size:.82rem;font-weight:600;color:#CBD5E1;
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(18,18,31,.7);
  transition:all .22s ease;
}
.chip:hover{color:#fff;border-color:var(--line-strong);background:rgba(163,230,53,.1);transform:translateY(-1px)}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:22px}
.meta-pill{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:7px 13px;background:rgba(7,7,13,.6);
}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--volt);box-shadow:0 0 10px var(--volt);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
/* Stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{
  background:linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.86));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 20px;
  transition:transform .25s ease,border-color .25s ease;
}
.stat-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.stat-value{font-size:1.75rem;font-weight:800;letter-spacing:-.02em;background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{margin-top:8px;font-size:.87rem;color:var(--muted);line-height:1.6}
/* Split blocks */
.split{display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center}
.split--flip .split-media{order:-1}
.split-media{border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-soft);position:relative}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s ease}
.split-media:hover img{transform:scale(1.04)}
.bullet-list{margin-top:22px}
.bullet-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.bullet-list li:last-child{border-bottom:0}
.bullet-mark{
  flex-shrink:0;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;
  background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.35);color:#7DD3FC;font-size:14px;font-weight:700;
}
.bullet-list strong{display:block;font-size:.97rem;margin-bottom:3px}
.bullet-list span{font-size:.88rem;color:var(--muted);line-height:1.62}
/* Steps */
.step-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.step-item{
  background:linear-gradient(150deg,rgba(18,18,31,.95),rgba(14,14,30,.8));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;
  display:flex;gap:16px;transition:transform .25s ease,border-color .25s ease;
}
.step-item:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.step-num{
  flex-shrink:0;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  font-weight:800;font-size:1rem;color:#06120A;background:linear-gradient(140deg,var(--volt),#5EEAD4);
  box-shadow:var(--shadow-volt);
}
.step-item h3{font-size:1rem;font-weight:700;margin-bottom:6px}
.step-item p{font-size:.88rem;color:var(--muted);line-height:1.64}
/* Checklist */
.check-list{margin-top:20px}
.check-list li{display:flex;gap:12px;padding:11px 0;font-size:.92rem;color:#CBD5E1;line-height:1.6}
.check-list li::before{content:"✓";flex-shrink:0;color:var(--volt);font-weight:800}
/* Signal board */
.signal-board{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:rgba(14,14,30,.6)}
.signal-row{display:grid;grid-template-columns:170px 1fr 200px;gap:18px;padding:18px 22px;border-bottom:1px solid var(--line);align-items:center}
.signal-row:last-child{border-bottom:0}
.signal-row:hover{background:rgba(163,230,53,.05)}
.signal-head{background:rgba(6,182,212,.1);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:#7DD3FC}
.signal-time{font-weight:800;color:var(--volt);font-size:.95rem}
.signal-desc{font-size:.9rem;color:#CBD5E1;line-height:1.6}
.signal-act{font-size:.84rem;color:var(--muted)}
.tag{display:inline-block;font-size:.72rem;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.04em}
.tag-hot{background:rgba(244,63,94,.14);color:#FDA4AF;border:1px solid rgba(244,63,94,.4)}
.tag-cool{background:rgba(6,182,212,.14);color:#7DD3FC;border:1px solid rgba(6,182,212,.4)}
/* Mistakes */
.mistake-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.mistake-item{
  border:1px solid var(--line);border-left:3px solid var(--laser);border-radius:var(--radius-md);
  padding:20px 22px;background:linear-gradient(120deg,rgba(244,63,94,.06),rgba(18,18,31,.9));
  transition:transform .25s ease,border-color .25s ease;
}
.mistake-item:hover{transform:translateX(4px)}
.mistake-item h3{font-size:.98rem;font-weight:700;margin-bottom:6px}
.mistake-item p{font-size:.87rem;color:var(--muted);line-height:1.64}
/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
  display:flex;flex-direction:column;gap:12px;padding:22px;border-radius:var(--radius-lg);
  border:1px solid var(--line);background:linear-gradient(150deg,rgba(18,18,31,.95),rgba(14,14,30,.85));
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;height:100%;
}
.news-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 20px 44px -24px rgba(6,182,212,.5)}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.news-cat{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--plasma)}
.news-date{font-size:.74rem;color:#64748B}
.news-card h3{font-size:1rem;font-weight:700;line-height:1.45}
.news-card p{font-size:.86rem;color:var(--muted);line-height:1.62;flex:1}
.news-more{font-size:.82rem;font-weight:700;color:var(--volt);display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-more{gap:10px}
.news-empty{padding:26px;border:1px dashed var(--line);border-radius:var(--radius-lg);color:var(--muted);font-size:.9rem;text-align:center}
/* Trust */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.trust-item{
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  background:linear-gradient(160deg,rgba(6,182,212,.08),rgba(18,18,31,.9));
  transition:transform .25s ease,border-color .25s ease;
}
.trust-item:hover{transform:translateY(-4px);border-color:rgba(6,182,212,.45)}
.trust-item h3{font-size:.95rem;font-weight:700;margin:12px 0 6px}
.trust-item p{font-size:.85rem;color:var(--muted);line-height:1.62}
.trust-ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(163,230,53,.12);border:1px solid rgba(163,230,53,.35);color:var(--volt);font-weight:800;
}
.pay-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pay-badge{
  font-size:.8rem;font-weight:600;padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(7,7,13,.7);color:#CBD5E1;
}
/* QA + FAQ */
.qa-grid{display:grid;grid-template-columns:.95fr 1.15fr;gap:34px;align-items:start}
.qa-item{border-left:2px solid var(--plasma);padding:4px 0 4px 18px;margin-bottom:20px}
.qa-item h3{font-size:.98rem;font-weight:700;margin-bottom:6px}
.qa-item p{font-size:.87rem;color:var(--muted);line-height:1.64}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(18,18,31,.85);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s ease;
}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  cursor:pointer;padding:16px 20px;font-size:.95rem;font-weight:600;list-style:none;
  display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--volt);font-size:1.15rem;font-weight:800;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item p{padding:0 20px 18px;font-size:.88rem;color:var(--muted);line-height:1.68}
/* CTA */
.cta-panel{
  display:grid;grid-template-columns:1.05fr .95fr;gap:36px;
  border:1px solid var(--line-strong);border-radius:var(--radius-xl);padding:38px;
  background:radial-gradient(700px 340px at 8% 0%,rgba(163,230,53,.14),transparent 62%),linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.9));
  box-shadow:var(--shadow-soft);
}
.cta-panel h2{font-size:clamp(1.35rem,2.2vw,1.85rem);font-weight:800;line-height:1.3;margin-bottom:14px}
.cta-panel p{color:#CBD5E1;font-size:.93rem;line-height:1.7}
.cta-note{margin-top:18px;font-size:.84rem;color:var(--muted)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:.8rem;font-weight:600;color:#CBD5E1}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:12px;background:rgba(7,7,13,.75);
  border:1px solid var(--line);font-size:.9rem;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(163,230,53,.6);box-shadow:0 0 0 3px rgba(163,230,53,.14);
}
.field--full{grid-column:1 / -1}
.form-grid .btn{grid-column:1 / -1;width:100%}
/* FAB */
.fab{
  position:fixed;left:1rem;bottom:6rem;z-index:50;display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:999px;
  background:rgba(7,7,13,.82);backdrop-filter:blur(12px);
  border:1px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.9),rgba(7,7,13,.9)),linear-gradient(96deg,var(--volt),var(--plasma));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 22px rgba(6,182,212,.45);opacity:.82;transition:all .25s ease;min-height:52px;
}
.fab:hover{opacity:1;transform:translateY(-2px);box-shadow:0 0 32px rgba(6,182,212,.75)}
.fab:active{transform:scale(.96)}
.fab svg{width:22px;height:22px;stroke:var(--volt);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.fab-text{font-size:.82rem;font-weight:700;color:#E2E8F0}
.fab-dot{position:absolute;top:6px;right:10px;width:9px;height:9px;border-radius:50%;background:var(--laser);box-shadow:0 0 10px var(--laser);animation:pulse 1.4s infinite}
/* Footer */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(14,14,30,.9),rgba(7,7,13,.98));position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:58px 0 34px}
.footer-brand p{margin-top:16px;font-size:.86rem;color:var(--muted);line-height:1.7;max-width:380px}
.footer-col h4{font-size:.85rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#E2E8F0;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:.87rem;color:var(--muted);transition:color .2s ease,padding-left .2s ease}
.footer-col ul li a:hover{color:var(--volt);padding-left:4px}
.age-badge{
  display:inline-block;font-size:.76rem;font-weight:600;color:#FDE68A;
  border:1px solid rgba(253,230,138,.35);background:rgba(253,230,138,.08);
  padding:6px 12px;border-radius:999px;
}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 30px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:.78rem;color:#64748B;
}
/* Responsive */
@media (max-width:1024px){
  .main-nav{
    display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:4px;padding:14px 20px 20px;background:rgba(7,7,13,.98);border-bottom:1px solid var(--line);
  }
  .main-nav.is-open{display:flex}
  .nav-link{text-align:left;padding:12px 14px;border-radius:12px}
  .nav-toggle{display:block}
  .nav-actions{order:3}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:26px}
  .split--flip .split-media{order:0}
  .qa-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .cat-hero{padding:44px 0 40px}
  .hero-search{flex-direction:column;border-radius:22px;padding:14px}
  .hero-search input[type="search"]{width:100%;text-align:center}
  .hero-search select,.hero-search .btn{width:100%}
  .step-grid{grid-template-columns:1fr}
  .mistake-grid{grid-template-columns:1fr}
  .signal-row{grid-template-columns:1fr;gap:6px;padding:16px 18px}
  .signal-head{display:none}
  .form-grid{grid-template-columns:1fr}
  .nav-actions .btn-ghost,.nav-actions .btn-primary{padding:8px 14px;font-size:.82rem}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .stat-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-text strong{font-size:.9rem}
  .brand-text em{font-size:.68rem}
  .fab-text{display:none}
  .fab{padding:14px;border-radius:999px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --void:#07070D;
  --abyss:#0E0E1E;
  --panel:#12121F;
  --panel-2:#161628;
  --volt:#A3E635;
  --plasma:#06B6D4;
  --laser:#F43F5E;
  --text:#FFFFFF;
  --muted:#94A3B8;
  --line:rgba(148,163,184,.16);
  --line-strong:rgba(163,230,53,.28);
  --radius-xl:26px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-soft:0 24px 60px -28px rgba(0,0,0,.9);
  --shadow-volt:0 10px 34px -12px rgba(163,230,53,.45);
  --shadow-plasma:0 10px 34px -12px rgba(6,182,212,.5);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:'Be Vietnam Pro',system-ui,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--void);
  color:var(--text);
  font-size:16px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--volt);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:76px 0;position:relative;z-index:1}
.section--alt{background:linear-gradient(180deg,rgba(14,14,30,.85),rgba(7,7,13,.4));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:800px;margin-bottom:34px;text-align:left}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;
  color:var(--volt);background:rgba(163,230,53,.08);
  border:1px solid rgba(163,230,53,.25);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.section-title .hl{background:linear-gradient(92deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-sub{margin-top:14px;color:var(--muted);line-height:1.68;font-size:1rem}
.lead{color:#CBD5E1;line-height:1.7}
/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,7,13,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,rgba(163,230,53,.22),rgba(6,182,212,.22));
  border:1px solid rgba(163,230,53,.35);
  box-shadow:0 0 18px rgba(163,230,53,.25);
}
.brand-text strong{display:block;font-size:.98rem;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-text em{display:block;font-style:normal;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:.9rem;font-weight:600;color:#CBD5E1;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.nav-link:hover{color:#fff;background:rgba(148,163,184,.1);border-color:var(--line)}
.nav-link.is-active{color:var(--void);background:linear-gradient(96deg,var(--volt),#5EEAD4);box-shadow:var(--shadow-volt)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{
  padding:9px 16px;border-radius:999px;font-size:.88rem;font-weight:600;color:var(--volt);
  border:1px solid rgba(163,230,53,.4);background:transparent;transition:all .22s ease;
}
.btn-ghost:hover{background:rgba(163,230,53,.12)}
.btn-primary{
  padding:10px 20px;border-radius:999px;font-size:.88rem;font-weight:800;color:#06120A;
  background:linear-gradient(96deg,var(--volt),#4ADE80);
  box-shadow:0 0 18px rgba(163,230,53,.45);transition:all .22s ease;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(163,230,53,.7)}
.btn-primary:active{transform:translateY(1px) scale(.98)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:rgba(148,163,184,.1);
  border:1px solid var(--line);font-size:20px;cursor:pointer;margin-left:auto;
}
/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:all .24s ease;
}
.btn-volt{background:linear-gradient(96deg,var(--volt),#4ADE80);color:#06120A;box-shadow:var(--shadow-volt)}
.btn-volt:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(163,230,53,.75)}
.btn-line{border-color:rgba(6,182,212,.5);color:#7DD3FC;background:rgba(6,182,212,.08)}
.btn-line:hover{background:rgba(6,182,212,.18);border-color:var(--plasma)}
.btn:active{transform:translateY(1px) scale(.985)}
/* Hero */
.hero{position:relative;padding:62px 0 56px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3;z-index:0}
.hero-veil{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(900px 480px at 12% 6%,rgba(163,230,53,.16),transparent 60%),
    radial-gradient(760px 420px at 88% 18%,rgba(6,182,212,.18),transparent 62%),
    linear-gradient(180deg,rgba(7,7,13,.78),rgba(7,7,13,.97));
}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:26px;align-items:start;position:relative;z-index:1}
.bento-main{
  background:linear-gradient(150deg,rgba(18,18,31,.96),rgba(14,14,30,.9));
  border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:34px 32px;box-shadow:var(--shadow-soft);
}
.hero h1{font-size:clamp(1.65rem,3.2vw,2.5rem);font-weight:800;line-height:1.22;letter-spacing:-.015em;margin:16px 0 18px}
.hero h1 .grad{background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-intro{color:#CBD5E1;line-height:1.7;font-size:1rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{margin-top:18px;font-size:.82rem;color:var(--muted);line-height:1.6}
.hero-side{display:grid;gap:16px}
.side-card{
  background:linear-gradient(150deg,rgba(18,18,31,.95),rgba(14,14,30,.85));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  transition:transform .25s ease,border-color .25s ease;
}
.side-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.side-card h2,.side-card h3{font-size:1.02rem;font-weight:800;margin-bottom:14px}
.side-list li{
  display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(148,163,184,.16);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list .tick{color:var(--volt);font-weight:800;flex-shrink:0}
.side-list .txt strong{display:block;font-size:.9rem;font-weight:700}
.side-list .txt span{font-size:.82rem;color:var(--muted);line-height:1.55}
.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:4px}
.mini-stat{background:rgba(6,182,212,.07);border:1px solid rgba(6,182,212,.22);border-radius:var(--radius-sm);padding:12px 10px;text-align:center}
.mini-stat b{display:block;font-size:1.1rem;color:#7DD3FC;font-weight:800}
.mini-stat span{font-size:.72rem;color:var(--muted);line-height:1.4;display:block;margin-top:4px}
/* Stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{
  background:linear-gradient(160deg,rgba(22,22,40,.92),rgba(14,14,30,.75));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 20px;
  position:relative;overflow:hidden;transition:transform .25s ease,border-color .25s ease;
}
.stat-card::after{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:linear-gradient(90deg,var(--volt),var(--plasma));opacity:.7}
.stat-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.stat-num{font-size:1.6rem;font-weight:800;background:linear-gradient(94deg,var(--volt),var(--plasma));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.stat-label{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:#7DD3FC;font-weight:700;margin-top:8px}
.stat-desc{font-size:.87rem;color:var(--muted);line-height:1.6;margin-top:10px}
/* Signal table */
.signal-wrap{
  margin-top:34px;background:linear-gradient(160deg,rgba(18,18,31,.95),rgba(12,12,24,.85));
  border:1px solid var(--line);border-radius:var(--radius-xl);padding:26px 24px;box-shadow:var(--shadow-soft);
}
.signal-head{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:flex-end;margin-bottom:18px}
.signal-head h3{font-size:1.15rem;font-weight:800}
.signal-head p{font-size:.85rem;color:var(--muted);max-width:520px;line-height:1.6}
.table-scroll{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--line)}
table.signal-table{width:100%;border-collapse:collapse;min-width:720px;font-size:.88rem}
table.signal-table thead th{
  background:rgba(6,182,212,.1);color:#7DD3FC;text-align:left;font-size:.76rem;
  text-transform:uppercase;letter-spacing:.08em;padding:13px 14px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.signal-table td{padding:13px 14px;border-bottom:1px solid rgba(148,163,184,.1);color:#CBD5E1;line-height:1.55;vertical-align:top}
table.signal-table tbody tr:last-child td{border-bottom:0}
table.signal-table tbody tr:hover{background:rgba(163,230,53,.04)}
table.signal-table td:first-child{color:#fff;font-weight:700;white-space:nowrap}
.tag{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.72rem;font-weight:700;white-space:nowrap}
.tag-low{background:rgba(148,163,184,.14);color:#CBD5E1;border:1px solid rgba(148,163,184,.25)}
.tag-mid{background:rgba(6,182,212,.14);color:#7DD3FC;border:1px solid rgba(6,182,212,.3)}
.tag-high{background:rgba(163,230,53,.14);color:var(--volt);border:1px solid rgba(163,230,53,.35)}
.tag-risk{background:rgba(244,63,94,.14);color:#FDA4AF;border:1px solid rgba(244,63,94,.35)}
/* Matrix */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.matrix-card{
  display:block;background:linear-gradient(160deg,rgba(22,22,40,.92),rgba(14,14,30,.78));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.matrix-card:hover{transform:translateY(-4px);border-color:rgba(6,182,212,.45);box-shadow:var(--shadow-plasma)}
.matrix-card .m-tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--plasma);font-weight:700}
.matrix-card h3{font-size:1.1rem;font-weight:800;margin:10px 0 10px}
.matrix-card p{font-size:.88rem;color:var(--muted);line-height:1.65}
.matrix-card .m-more{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:.85rem;font-weight:700;color:var(--volt)}
.matrix-card.is-current{border-color:rgba(163,230,53,.45);box-shadow:var(--shadow-volt)}
.matrix-card.is-current .m-tag{color:var(--volt)}
/* Focus blocks */
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center;margin-bottom:36px}
.split-media{border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--line);position:relative}
.split-media img{width:100%;height:100%;object-fit:cover;min-height:280px}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,7,13,.05),rgba(7,7,13,.55))}
.check-list li{display:flex;gap:12px;padding:10px 0;color:#CBD5E1;font-size:.94rem;line-height:1.62}
.check-list .tick{color:var(--volt);font-weight:800}
.focus-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.focus-card{
  background:linear-gradient(160deg,rgba(20,20,36,.9),rgba(12,12,24,.75));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  transition:transform .25s ease,border-color .25s ease;
}
.focus-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.focus-card .f-ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:19px;background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.28);margin-bottom:14px}
.focus-card h3{font-size:1rem;font-weight:700;margin-bottom:9px}
.focus-card p{font-size:.88rem;color:var(--muted);line-height:1.65}
/* Timeline */
.timeline{position:relative;margin-top:8px;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--volt),var(--plasma),transparent)}
.tl-item{position:relative;padding:0 0 26px 8px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--void);border:2px solid var(--volt);box-shadow:0 0 12px rgba(163,230,53,.6)}
.tl-item h3{font-size:1rem;font-weight:800;margin-bottom:7px}
.tl-item p{font-size:.9rem;color:var(--muted);line-height:1.65}
.tl-item .tl-meta{display:inline-block;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:#7DD3FC;font-weight:700;margin-bottom:7px}
/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step-card{
  position:relative;background:linear-gradient(160deg,rgba(22,22,40,.9),rgba(12,12,24,.75));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 20px 22px;
  transition:transform .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.step-card .step-no{
  position:absolute;top:-14px;left:20px;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:.95rem;color:#06120A;background:linear-gradient(96deg,var(--volt),#4ADE80);
  box-shadow:var(--shadow-volt);
}
.step-card h3{font-size:.98rem;font-weight:800;margin:16px 0 9px}
.step-card p{font-size:.86rem;color:var(--muted);line-height:1.65}
/* Mistakes */
.mistake-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.mistake-card{
  background:linear-gradient(160deg,rgba(28,14,22,.78),rgba(14,14,30,.8));
  border:1px solid rgba(244,63,94,.28);border-left:3px solid var(--laser);
  border-radius:var(--radius-md);padding:20px 22px;transition:transform .25s ease,box-shadow .25s ease;
}
.mistake-card:hover{transform:translateX(4px);box-shadow:0 12px 32px -16px rgba(244,63,94,.55)}
.mistake-card h3{font-size:.98rem;font-weight:800;margin-bottom:8px;color:#FDA4AF}
.mistake-card p{font-size:.87rem;color:#CBD5E1;line-height:1.65}
/* Assurance */
.assure-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.assure-item{
  background:rgba(18,18,31,.72);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  transition:border-color .25s ease,transform .25s ease;
}
.assure-item:hover{border-color:rgba(163,230,53,.35);transform:translateY(-3px)}
.assure-item .a-ico{font-size:22px;margin-bottom:12px;display:block}
.assure-item h3{font-size:.98rem;font-weight:800;margin-bottom:8px}
.assure-item p{font-size:.86rem;color:var(--muted);line-height:1.65}
/* Quick answers */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.qa-item{
  background:linear-gradient(150deg,rgba(20,20,36,.85),rgba(12,12,24,.7));
  border:1px solid var(--line);border-radius:var(--radius-md);padding:20px;
}
.qa-item h3{font-size:.95rem;font-weight:800;margin-bottom:8px;color:#fff}
.qa-item p{font-size:.86rem;color:var(--muted);line-height:1.65}
/* Posts */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
  display:flex;flex-direction:column;background:linear-gradient(160deg,rgba(22,22,40,.92),rgba(12,12,24,.78));
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.post-card:hover{transform:translateY(-5px);border-color:rgba(163,230,53,.4);box-shadow:var(--shadow-volt)}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.06)}
.post-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:.74rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:600}
.post-meta .pm-cat{color:var(--plasma)}
.post-card h3{font-size:1rem;font-weight:800;line-height:1.42}
.post-card h3 a:hover{color:var(--volt)}
.post-card p{font-size:.86rem;color:var(--muted);line-height:1.62;flex:1}
.post-link{margin-top:4px;font-size:.85rem;font-weight:700;color:var(--volt);display:inline-flex;align-items:center;gap:7px}
.post-link:hover{gap:11px}
.empty-note{
  grid-column:1/-1;text-align:center;padding:38px 22px;border:1px dashed var(--line);
  border-radius:var(--radius-lg);color:var(--muted);font-size:.92rem;background:rgba(18,18,31,.5);
}
/* FAQ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:linear-gradient(150deg,rgba(20,20,36,.88),rgba(12,12,24,.72));
  border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;transition:border-color .25s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item summary{
  cursor:pointer;padding:18px 22px;font-weight:700;font-size:.97rem;display:flex;justify-content:space-between;gap:14px;
  align-items:center;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--volt);font-size:1.3rem;font-weight:800;flex-shrink:0;transition:transform .25s ease}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 22px 20px;color:var(--muted);font-size:.9rem;line-height:1.7;border-top:1px solid rgba(148,163,184,.1);padding-top:16px}
/* CTA form */
.cta-band{
  background:
    radial-gradient(700px 320px at 8% 20%,rgba(163,230,53,.16),transparent 62%),
    radial-gradient(620px 320px at 92% 80%,rgba(6,182,212,.18),transparent 62%),
    linear-gradient(150deg,rgba(20,20,38,.96),rgba(10,10,20,.92));
  border:1px solid var(--line-strong);border-radius:var(--radius-xl);padding:38px 34px;box-shadow:var(--shadow-soft);
}
.cta-band h2{font-size:clamp(1.35rem,2.4vw,1.9rem);font-weight:800;line-height:1.28}
.cta-band p{margin-top:14px;color:#CBD5E1;font-size:.96rem;line-height:1.7;max-width:760px}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start;margin-top:26px}
.form-grid{display:grid;gap:14px}
.form-field label{display:block;font-size:.82rem;font-weight:700;color:#CBD5E1;margin-bottom:7px}
.form-field input,.form-field select{
  width:100%;padding:13px 15px;border-radius:var(--radius-sm);background:rgba(7,7,13,.75);
  border:1px solid var(--line);color:#fff;font-size:.92rem;transition:border-color .22s ease,box-shadow .22s ease;
}
.form-field input:focus,.form-field select:focus{outline:none;border-color:var(--volt);box-shadow:0 0 0 3px rgba(163,230,53,.16)}
.form-field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#94A3B8 50%),linear-gradient(135deg,#94A3B8 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.form-note{font-size:.78rem;color:var(--muted);line-height:1.6}
.cta-points li{display:flex;gap:11px;padding:10px 0;font-size:.9rem;color:#CBD5E1;line-height:1.6;border-bottom:1px dashed rgba(148,163,184,.14)}
.cta-points li:last-child{border-bottom:0}
.cta-points .tick{color:var(--volt);font-weight:800;flex-shrink:0}
/* Footer */
.site-footer{background:linear-gradient(180deg,rgba(10,10,20,.6),rgba(7,7,13,.98));border-top:1px solid var(--line);padding:56px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{margin-top:16px;font-size:.87rem;color:var(--muted);line-height:1.7;max-width:420px}
.age-badge{display:inline-block;font-size:.76rem;font-weight:700;color:#FCD34D;background:rgba(244,63,94,.12);border:1px solid rgba(244,63,94,.35);border-radius:999px;padding:6px 13px;letter-spacing:.03em}
.footer-col h4{font-size:.86rem;text-transform:uppercase;letter-spacing:.1em;color:#fff;margin-bottom:16px;font-weight:800}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{font-size:.88rem;color:var(--muted);transition:color .2s ease}
.footer-col ul li a:hover{color:var(--volt)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.8rem;color:var(--muted);line-height:1.65;
}
/* FAB */
.fab{
  position:fixed;left:16px;bottom:96px;z-index:50;width:56px;height:56px;border-radius:999px;
  display:grid;place-items:center;font-size:23px;
  background:rgba(7,7,13,.82);backdrop-filter:blur(12px);
  border:2px solid transparent;
  background-image:linear-gradient(rgba(7,7,13,.86),rgba(7,7,13,.86)),linear-gradient(140deg,var(--volt),var(--plasma));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 20px rgba(6,182,212,.45);opacity:.78;transition:all .28s ease;
}
.fab:hover{opacity:1;transform:scale(1.1);box-shadow:0 0 30px rgba(163,230,53,.6)}
.fab:active{transform:scale(.94)}
.fab .fab-dot{position:absolute;top:4px;right:4px;width:12px;height:12px;border-radius:50%;background:var(--laser);box-shadow:0 0 10px rgba(244,63,94,.9);animation:pulseDot 1.6s infinite}
@keyframes pulseDot{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.25);opacity:.65}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
.fab{animation:floatY 4s ease-in-out infinite}
/* Responsive */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .matrix-grid,.focus-grid,.assure-grid,.post-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,7,13,.98);border-bottom:1px solid var(--line);padding:14px 20px 20px;
    transform:translateY(-140%);transition:transform .3s ease;max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateY(0)}
  .nav-link{padding:13px 14px;font-size:.95rem}
  .nav-toggle{display:block}
  .nav-actions .btn-ghost{display:none}
  .hero{padding:44px 0 40px}
  .bento-main{padding:24px 20px}
  .stat-grid{grid-template-columns:1fr}
  .matrix-grid,.focus-grid,.assure-grid,.post-grid,.mistake-grid,.qa-grid,.steps{grid-template-columns:1fr}
  .cta-band{padding:28px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .mini-stats{grid-template-columns:1fr 1fr 1fr}
  .fab{bottom:88px;left:14px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text strong{font-size:.9rem}
  .brand-text em{display:none}
  .hero h1{font-size:1.5rem}
  .mini-stats{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .btn{width:100%}
  .hero-cta .btn{width:100%}
}